The Minoan eruption of Santorini was a large-magnitude natural event. However, in terms of scale it ranks smaller in erupted volume and eruptive intensity than the historical eruption of Tambora in 1815 AD, and smaller in sulphur emission and, by inference, climatic effects than both the Tambora and Mt. Pinatubo, 1991, eruptions.
From Wikipedia, the free encyclopedia. For the band, see Linea Aspera (band) . The linea aspera (Latin: rough line) is a ridge of roughened surface on the posterior surface of the femur, to which are attached muscles and intermuscular septum.Its margins diverge above and below. number of muscles attach to the linea aspera: 1  From the medial lip of the linea aspera and its prolongations above and below, the vastus medialis originates. 2  From the lateral lip and its upward prolongation, the vastus lateralis takes origin.
All muscles have basically the same structure. Each muscle has an attachment at both ends, called the origin and insertion, and a fleshy contractile part, called the muscle belly. The point of origin is the point of attachment where the muscle is anchored to the bone.he point of origin is the point of attachment to the bone to which the muscle is anchored. The point of insertion is the point of attachment to the bone the muscle moves. Generally, the muscles are attached by tough fibrous structures called tendons.